TWM573675U - Structure of indexing plate - Google Patents

Abstract

The present invention provides an indexing disc brake structure, comprising: a base; a spindle is rotatably disposed on the base; a fixing member is fixed on the base, the fixing member has a guiding inclined surface; and a brake structure has a pushing member, a rolling member, a brake block and a brake member, the pushing member is slidably disposed on the base in a direction parallel to the axis of the main shaft, and the pushing member has a sliding inclined surface; the brake member is coupled to the main shaft, and the brake block is slidably disposed between the rolling member and the braking member. The brake block has a brake bevel; the sliding bevel, the guiding bevel and the brake bevel contact the rolling member, and when the rolling member is pushed against the inclined inclined surface and moves along the guiding inclined surface toward the braking inclined surface, the braking block is pushed by the rolling member, so that the brake block is pushed by the rolling member The brake block presses against the brakes toward the brakes; thereby effectively increasing the braking force to effectively brake the spindle.

Description

Indexing disc brake structure

This creation is about an indexing disc related field, especially an indexing disc brake structure that can increase the braking force.

Pressing, the indexing plate is one of the main components of the machine tool, and is used for clamping and fixing the workpiece on the indexing plate, and enabling the workpiece to be rotated, indexed and positioned, so as to perform indexing drilling on the machine tool, Machining operations such as milling.

When the turntable of the conventional indexing plate is rotated to a predetermined angle, the turntable must stop rotating for the tool to machine the workpiece, so the indexing plate is usually provided with a brake device to effectively lock the spindle to the stop position, avoiding the tool The cutting force causes the jog of the turntable to affect the machining accuracy.

The current brake device uses a point contact for braking or a surface contact for braking, but the braking force of the two is insufficient, resulting in a problem that the brake cannot be surely.

In addition, the current indexing plate does not have self-locking protection capability, so once the power is lost, the braking effect is also invalid, which causes the risk of collision between the tool and the spindle, which may affect the accuracy of the spindle or cause damage to the spindle. The problem that caused the spindle to be replaced occurred.

In order to solve the above problems, the present invention provides an indexing disc brake structure that pushes a rolling member against a rolling member to move the rolling member along the guiding inclined surface toward the brake inclined surface; thereby, the through inclined surface, the guiding inclined surface, and the braking The three inclined faces of the inclined surface increase the force on the brakes, so that the main shaft achieves an effective braking effect.

An embodiment of the present invention provides an indexing disc brake structure, comprising: a base; a spindle that is rotatably disposed on the base; a fixing member fixed to the base, the fixing member having a guiding slope And a brake structure having a pushing member, a rolling member, a brake block and a brake member, the pushing member is slidably disposed on the base in a direction parallel to the axis of the main shaft, the pushing member has a pushing slope; the brake member is coupled to The main shaft and the brake block are slidably disposed between the rolling member and the brake member, and the brake block has a brake inclined surface, wherein the sliding inclined surface, the guiding inclined surface and the brake inclined surface contact the rolling member, and the rolling member is pushed by the inclined inclined surface and guided along the guiding The inclined surface moves toward the brake ramp, and the brake block is pushed by the rolling member to press the brake block against the brake member.

In one of the embodiments, the guiding slope has a first angle with respect to the axial direction of the main shaft, and the first angle is an acute angle.

In one of the embodiments, the slanting slope has a second angle with respect to the axial direction of the main shaft, and the second angle is an acute angle.

In one of the embodiments, the brake ramp has a third angle with respect to the axial direction of the main shaft, and the third angle is an acute angle.

In one embodiment, the fixing member has a sliding groove recessed along the axial direction of the main shaft, and the pushing member is slidably disposed on the sliding groove; an elastic member is disposed between the fixing member and the pushing member, and the elastic member normally holds the pushing member. Facing the brakes.

In one of the embodiments, the brake block is provided with a brake bevel on one side of the brake member.

In one embodiment, the pushing member is provided with a limiting member toward one side of the brake block; the braking block is provided with a limiting portion, and the limiting member and the limiting portion can form a stop to limit the displacement of the braking block.

In one of the embodiments, the limiting portion connects the brake ramp.

By the above, the present invention moves the rolling member along the guiding slope toward the brake bevel by pushing the inclined surface to push the rolling member, and the three inclined surfaces of the inclined surface, the guiding inclined surface and the brake inclined surface are passed through, so that the rolling member acts on the braking member. It has the effect of increasing the force, so that the main shaft achieves an effective braking effect, so as to effectively improve the problem of insufficient speed of the conventional brake.

In addition, by the elastic member normally holding the pushing member toward the brake member, when the driving force of the pushing member disappears, the elastic member still has sufficient force to apply the pushing member to the rolling member and act on the braking member to maintain the self-locking. State to avoid the risk of a machining tool colliding with the spindle.

For the convenience of the description, the central idea expressed in the column of the above novel content is expressed by a specific embodiment. The various items in the examples are drawn to scale in the description and not to the actual elements, and are described in the foregoing.

Referring to FIGS. 1 to 4 , the present invention provides an indexing disc brake structure comprising: a base 10 , a main shaft 20 , a fixing member 30 , and a brake structure 40 .

The spindle 20 is rotatably disposed on the base 10, and the spindle 20 is exposed at the front end of the base 10 to fix an indexing turntable 21. The main shaft 20 is capable of driving the worm gear through the motor to cause the main shaft 20 and the indexing table 21 to rotate.

The fixing member 30 is fixed to the base 10 and disposed between the indexing turntable 21 and the base 10; wherein the fixing member 30 has a guiding inclined surface 31, wherein the guiding inclined surface 31 is opposite to the axis of the main shaft 20. The direction has a first angle A, and the first angle A is an acute angle. Further, the fixing member 30 is recessed with a sliding slot 32 on the inner side of the guiding slope 31 with respect to the axis of the main shaft 20.

The brake structure 40 has a pushing member 41, a rolling member 42, a brake block 43, and a brake member 44. The pushing member 41 is slidably disposed on the base 10 in the axial direction of the parallel main shaft 20. In the present embodiment, the pushing member 41 is controlled by a solenoid valve, and the pushing member 41 is slidably disposed in the chute in the direction of the axis of the parallel main shaft 20. 32; the rolling member 42 is a steel ball. Further, the pushing member 41 has a pushing inclined surface 411 which contacts the rolling member 42. The pushing inclined surface 411 has a second angle B with respect to the axial direction of the main shaft 20, and the second angle B is an acute angle.

A limiting member 45 is disposed on one side of the driving member 41 toward the side of the brake block 43. In the present embodiment, the limiting member 45 is screwed to the pushing member 41.

An elastic member 50 is disposed between the pushing member 41 and the fixing member 30. The elastic member 50 normally holds the pushing member 41 toward the brake member 44. In the present embodiment, the pushing member 41 is disposed at an inner end of the inclined slope 411. The elastic member 50 is a spring. The outer end of the elastic member 50 abuts against the inner wall of the fixing member 30. In the present embodiment, the elastic member 50 is a spring.

The brake block 43 is slidably disposed between the rolling member 42 and the brake member 44. The brake member 44 is coupled to the spindle 20 opposite to the indexing dial 21, wherein the brake block 43 is pushed by the rolling member 42 to face the brake block 43. The contact means is urged against the brake member 44. In the present embodiment, the brake member 44 is in the shape of a disk.

Furthermore, the brake block 43 is different from one side of the brake member 44 and the contact rolling member 42 is provided with a brake bevel 431. The brake bevel 431 has a third angle C with respect to the axial direction of the main shaft 20, and the third angle C is an acute angle. The angles of the first angle A, the second angle B and the third angle C can all be the same, any two are the same or different, and the creation can be adjusted according to different needs.

When the rolling member 42 is pushed against the sliding inclined surface 411 of the pushing member 41 and moves along the guiding inclined surface 31 of the fixing member 30 toward the braking inclined surface 431 of the brake block 43, the brake block 43 is urged by the rolling member 42 to brake The block 43 is pressed against the brake member 44, and the guiding ramp 31, the shifting ramp 411 and the brake ramp 431 can effectively clamp the rolling member 42 to increase the braking force of the spindle 20.

In addition, the brake block 43 is provided with a limiting portion 432, and the limiting portion 432 is coupled to the brake inclined surface 431. The limiting member 45 and the limiting portion 432 can form a stop to limit the displacement of the pushing member 41.

As shown in FIG. 3, the present invention is in a braking state; when the pushing member 41 is slipped relative to the base 10, the pushing surface 41 of the pushing member 41 can push the rolling member 42 to cause the rolling member 42 to follow the guiding slope. 31 moves toward the brake ramp 431 and causes the rolling member 42 to abut against the brake block 43 so that the brake block 43 is in surface contact and pressed against the brake member 44 to reach the brake of the main shaft 20.

Since the slanting slope 411 is inclined, the axial force component of the pushing member 41 acting on the rolling member 42 and parallel to the axis of the main shaft 20 is made larger, so that the rolling member 42 is urged through the brake block 43 and pressed against the brake member 44. The force effect, and the inclined arrangement of the guiding slope 31 provides the smooth guiding effect of the rolling member 42, so that the rolling member 42 effectively transmits the force to the braking member 44, and the guiding inclined surface 31, the sliding inclined surface 411 and the braking inclined surface 431 are three. The rolling member 42 can be effectively clamped to achieve the effect of increasing the braking force of the main shaft 20, and the braking block 43 and the braking member 44 are in surface contact to bring about a braking effect.

As shown in Figure 4, this is a non-brake state. When the pushing member 41 is driven and displaced in the direction of the fixing member 30, the pushing member 41 overcomes the elastic force of the elastic member 50, so that the pushing slope 411 is no longer applied to the rolling member 42, that is, the rolling member 42 does not abut against the brake block 43. Applying pressure to the brake member 44, at this time, by the stopper portion 432 of the brake block 43 and the stopper 45, the brake block 43 can be displaced along the direction of the pusher 41 toward the fixture 30, so that the brake block 43 leaves the brake member 44 without contacting, so that the spindle 20 is in a non-brake state.

Therefore, the present invention moves the rolling member 42 along the guiding inclined surface 31 toward the brake inclined surface 431 by pushing the inclined surface 411, and the three inclined surfaces of the inclined inclined surface 411, the guiding inclined surface 31 and the brake inclined surface 431 are effectively clamped. The rolling member 42 is tightened so that the force of the rolling member 42 acting on the brake member 44 is increased to bring the main shaft 20 to an effective braking effect.

Furthermore, the elastic member 50 pushes the pushing member 41 toward the brake member 44 in a normal state, even when the driving force of the pushing member 41 disappears, the elastic member 50 has sufficient force to urge the pushing member 41 to the rolling member. 42, and acting on the brake member 44 to maintain a self-locking state, avoiding the risk of the machining tool colliding with the spindle 20.

The above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. All kinds of modifications or changes that are not in violation of the spirit of this creation are all in the scope of this creative intention.

10‧‧‧ Pedestal

20‧‧‧ Spindle

21‧‧‧Dividing turntable

30‧‧‧Fixed parts

31‧‧‧ Guided slope

32‧‧‧Chute

40‧‧‧ brake structure

41‧‧‧Promoters

411‧‧‧Climbing ramp

412‧‧‧ 容容

42‧‧‧Rolling parts

43‧‧‧ brake block

431‧‧‧ brake bevel

432‧‧‧Limited

44‧‧‧ brakes

45‧‧‧Limited parts

50‧‧‧Flexible parts

A‧‧‧ first angle

B‧‧‧second angle

C‧‧‧ third angle

Figure 1 is a schematic view of the stereoscopic appearance of the present invention. Figure 2 is a partial cross-sectional view of the present creation. Fig. 3 is an enlarged schematic view of Fig. 2 showing the main shaft in a braking state. Figure 4 is a cross-sectional view of the creation, showing the spindle in a non-brake state.

Claims (8)

An indexing disc brake structure, comprising: a base; a spindle that is rotatably disposed on the base; a fixing member fixed to the base, the fixing member has a guiding slope; and a brake structure The ejector has a pushing member, a rolling member, a brake block and a brake member. The pushing member is slidably disposed on the base in a direction parallel to the axis of the main shaft. The pushing member has a pushing slope; the brake member is coupled to the brake member. The main shaft, the brake block is slidably disposed between the rolling member and the brake member, the brake block has a brake bevel, wherein the sliding bevel, the guiding bevel and the brake bevel contact the rolling member, the rolling member The brake block is moved toward the brake ramp along the guide ramp, and the brake block is pushed by the rolling member to press the brake block against the brake member. The indexing disc brake structure of claim 1, wherein the guiding slope has a first angle with respect to an axial direction of the main shaft, and the first angle is an acute angle. The indexing disc brake structure of claim 1, wherein the slanting slope has a second angle with respect to an axial direction of the main shaft, and the second angle is an acute angle. The indexing disc brake structure of claim 1, wherein the brake ramp has a third angle with respect to an axial direction of the main shaft, and the third angle is an acute angle. The indexing disc brake structure of claim 1, wherein the fixing member has a sliding slot recessed along the axial direction of the main shaft, the pushing member is slidably disposed on the sliding slot; and the fixing member and the pushing member have An elastic member that normally holds the pushing member toward the brake member. The indexing disc brake structure of claim 1, wherein the brake block is different from a side of the brake member. The indexing disc brake structure of claim 1, wherein the pushing member is provided with a limiting member facing one side of the brake block; the braking block is provided with a limiting portion, and the limiting member and the limiting portion can A stop is formed to limit the amount of displacement of the pusher. The indexing disc brake structure of claim 7, wherein the limiting portion is coupled to the brake ramp.